Abstract: Based on the safety requirements of the artificial islands for marine production of oil and gas， the monitoring methods and technical requirements are put forward for the artificial islands in coastal areas during operation stage. Based on researches on the safety monitoring automatic system for the artificial island of 1-3# of Jidong Oilfield Company， a safety monitoring automatic system for the artificial islands in the coastal areas in China is first developed and established so as to realize real-time automatic monitoring， data processing， information release and warning for the artificial islands in the coastal areas. The preliminary operation results show that the artificial island 1-3# exhibits obvious nonuniform settlement and shrinkage phenomenon during operation period. The research results will provide technical basis and support for the safe construction and management of the artificial islands in the coastal areas during operation stage. It can be used as a reference to the safety monitoring of the coastal projects during operation stage.